For that much-coveted nice, calm, clean feeling: it energizes without draining, promotes relaxation without drowsiness, and motivates without a hint of a jagged edge.


What is L-theanine?

L-theanine, first identified by Japanese scientists in 1949, is a non-dietary amino acid most commonly found in tea leaves and certain types of mushrooms. Structurally, L-theanine is similar to the ‘excitatory’ neurotransmitter glutamate and is, therefore, able to bind to glutamate receptors.

Benefits of L-theanine

Reduces stress and anxiety

In today’s fast-paced world, you’re likely on a first-name basis with stress and anxiety. Care for your physical and mental health with L-theanine – a moderate anxiolytic. Not only does it enhance brain chemicals that promote feelings of calm, but it also reduces levels of ‘excitatory’ chemicals linked to stress and anxiety. Perfect for fostering that much-coveted state of relaxed, attentive wakefulness you need for optimal performance.

Enhances cognitive functions

Through its inhibitory actions on stress hormones like cortisol and corticosterone, L-theanine enhances your memory and learning capabilities. And its cognitive benefits extend beyond that as well. L-theanine helps boosts the levels of dopamine, serotonin, and GABA – three neurotransmitters crucial for alertness and attention. You can, therefore, look forward to that improved attention span, enhanced ability to get into the flow, and better decision-making abilities; even if you battle anxiety daily.

Improves sleep

Say goodbye to hours of tossing and turning on the bed. Thanks to the relaxation boost it delivers by reducing the excitatory neurotransmitter glutamate, L-theanine helps you fall asleep more easily and quickly at bedtime. And it’s not just that. Research also shows that L-theanine supplementation can improve the quality of your sleep, so you wake up feeling refreshed and ready to take on the day – every morning.

L-theanine side effects

L-theanine is generally well-tolerated with no adverse side effects. There are also no published reports of adverse interactions with other natural products or conventional prescription medications.

Dosage per day: 220 – 500 mg
Effect begins: 30 – 45 minutes
Duration of action: The calming effect of L-theanine can last for 8-10 hours.

Extended usage: With prolonged use, L-theanine does not create habits, it does not lead to tolerance and dependence.

Caffeine notes: You can combine L-theanine with caffeine to reduce some of the adverse effects of the latter, such as: nervousness to counteract. Taken together, caffeine and L-theanine can promote faster reaction time, accuracy when switching from one task to another, and even an attention span.

L-theanine, cellulose (vegetarian capsules)

User discretion is advised. Individuals from the following groups and/or any other groups at risk should consult with a doctor prior to taking this or any other medication:

  • Pregnancy or lactating women
  • Children under the age of 12
  • Individuals with kidney problems
  • Individuals with heart and/or blood pressure problems – L-theanine may lower blood pressure
  • Immunocompromised individuals

Additional Notes

  • Do not exceed the recommended dose
  • Keep out of reach of children
  • Store in cool dark conditions
  • Do not consume past the expiry date
  • Suitable for vegans/vegetarians
  • This product and its statements have not been evaluated by the FDA or any other regulatory body
  • This product is a dietary supplement and is not a substitute for a varied and balanced diet and/or healthy lifestyle


Write a review for this product

A. Weller  | Dec 11, 2020

Deep sleep quality has clearly improved when taking it before bedtime. Additionally, mental focus during the day is higher when taking it with my coffee. Love it!

Grzegorz Paluch  | Oct 28, 2020

Good for price.

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